Isobutylene superimposed hydrogenation technology
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At present, which companies at home and abroad are engaged in isobutylene copolymerization hydrogenation technology? ? Reliable and mature
The Institute of Petrochemistry has installed one such unit at the Shijiazhuang refining plant. I went to the presentation event on site; the investment required is not high – the main cost lies in catalysts. For a unit capable of producing 20,000–30,000 tons of MTBE, the investment in modifications, excluding the cost of catalysts, is only a few million yuan
What can be the conversion rate for this isobutylene polymerization? ?
It is divided into selective copolymerization – isobutylene copolymerization and non-selective copolymerization – butylene copolymerization. The conversion rate can be maintained above 90%, and it can be fine-tuned according to the severity of the reaction; the highest rate seems to be able to reach 98%.
Isn’t it also unrealistic to try to extract butene-1 again after stacking? ?
It’s not realistic. Regarding the modification of MTBE, it is mainly due to so-called policy reasons ； Each factory should conduct a comprehensive consideration based on actual conditions (region, raw materials, the entire facility, etc.) to formulate the next step plan ； After all, indirect alkylation (isobutylene polymerization–hydrogenation into oils) is not economically viable at present.
No, the stacking is not thorough enough, and isobutylene is still present, which results in insufficient purity when butene-1 is separated
What about the cost-effectiveness? What are the main costs of operating expenses?
I have a fairly good understanding of lamination, so we can discuss it